ATLAS 550 System Manual - Adtran

ATLAS 550 System Manual Section 2 Engineering Guidelines
Table 19. RS-232 Connector Pinout (P/N 4200754L4)
Pin Signal Description Pin Signal Description
1 Shield (Ground) 14 Sec. Transmit Data
2 Transmit Data 15 DCE Transmit Clock
3 Received Data 16 Sec. Received Data
4 Request to Send 17 Receive Signal Element Timing
5 Clear to Send 18 Unused
6 Data Set Ready 19 Sec. Request to Send
7 Signal Ground 20 Data Terminal Ready
8 Received Line Signal Detector 21 Signal Quality Detector *
9 + Voltage * 22 Ring Indicator
10 - Voltage * 23 Data Signal Rate Selector *
11 Unused 24 DTE Transmit Clock
12 Sec. Received LIne Signal Indicator 25 Unused
13 Sec. Clear to Send
Asterisk (*) indicates that this pin is ignored by Dual USSI Module.
Table 20. CCITT X.21/V.11 Connector Pinout (P/N 4200754L3)
Pin Signal Description Pin Signal Description
1 Shield (Ground) 9 Transmit Data (B)
2 Transmit Data (A) 10 Request to Send (B)
3 Request to Send (A) 11 Received Data (B)
4 Received Data (A) 12 Carrier Detect (B)
5 Carrier Detect (A) 13 Transmit/Received Clock (B)
6 Transmit/Receive Clock (A) 14 Ext. Transmit Clock (B)
7 Ext. Transmit Clock (A) 15 Unused
8 Signal Ground
61200305L2-1B © 2004 ADTRAN, Inc. 41